Hose-coupling.



No. 876,071. PATENTED JAN. 7, 1908. G. W. MARTIN.

HOSE COUPLING.

APPLICATION FILED FEB. 23, 1904.

71 6 (7/2 @5505, z 'e/z/afl' jaw/Mag 5. Jim

UNITED STATES PATENT OFFICE.

CARY WILLIAM MARTIN, OF DUNKIRK, NEW YORIC, ASSIGNOR TO MARTIN GARHEATING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF WEST VIRGINIA.

HOSE-COUPLING.

Specification of Letters Patent.

Patented Jan. 7, 1908.

Application filed February 23. 1904. Serial No. 194.919.

To all whom it may concern:

Be it known that I, CARY WILLIAM MAR- TIN, a citizen of the UnitedStates, and residing at Dunkirk, Chautauqua county, New York, haveinvented a certain new, useful, and Improved Hose-Coupling, of which thefollowing is a full, clear, and exact description, such as will enableothers skilled in the art to which it \appertains to make and use thesame. v

This invention has reference to improvements in coupling devices forflexible or hose connections such as are used between cars of a railroadtrain, and has particular reference to such styles of couplingconnections as are ordinarily employed in connection with the steamheating apparatus of the trains.

The object ofthis invention is the provision of an im roved form oflocking device whereby to ho d the two parts of the coupler in properrelative position when the same are coupled. The above as well as suchother objects as may hereinafter appear, I attain b means of aconstruction which I have i ustrated in preferred form in theaccompanying drawings, wherein F1 re 1 is a side elevation of one-halfof a coup embodying my invention. Fig. 2 is a sectional view taken onthe line 2 -2 of Fig. 1; and Fig. 3 is a sectional view taken on theline 3 3 of Fig. 1.

Referring now to Figs. 1 and 2, it will be seen that I have thereinshown a half coupling comprising a head or casting, 6, which is similarin shape to those commonly used in the art in general, but provided withspecial forms bearing on the locking attachments. The projecting lockingwing, 7, is adapted to engage with the complementary locking lug orprojection, 8, which extends from the locking surface, 12, of the othermember or half coupling, as will be understood from the common practicein the art. In Fig. 3 I have shown the complementary parts in po sitionof engagement. The particular means em loyed by me for securing theparts in inter ocked position when assembled comprise a ball 10, and aspring 11, which presses the ball outwardly in position to projectslightly from the side or looking face, 12 (see Fig. 3), so as to entera recess, 13, in the projecting part or looking wing of the adjacentcoupling member. A second ball 10 is preferably in- .terposed betweenthe ball 10 and the spring,

as shown. The spring, 11, and the balls, 10,

are housed within the body of the casing, 6,

and secured in place by a small ea or plug, 14, as shown. The operationof t is mechanism is as follows- When the two half cou lings are puttogether, which is accomplished in the usual manner, by a partialrotation of the same about a horizontal axis so as to interlock thecomplementary wings and lugs, 7 and 8, of the respective half cou lingsor members, the ball, 10, will be presse back into the recess againstthe strength of the spring, 11, so as to permit movement of the parts tolocklng position; when t will be proj ected into the recess, 13, asindicated in Fig. 3, by the operation of the spring, 11, thereaftertending to resist unlocking movement but not with suflicient force toprevent the positive disconnection of the coupling when occasionrequires. The intervening ball 10 is chiefly desirable when the springis arranged in a chamber or housing Which, as shown, extends vertically,or in any other direction than horizontally across the coupling head,serving thus to translate the stress of the spring into ahorizontally-outward thrust against the ball 10. The invention is notlimited to the vertical or other particular direction of thespring-chamber.

Having thus described my invention, I claim as new, and desire to secureby Letters Patent:

1. Ina hose coupling of the class described, a coupler member with itslocking lug and wing, having a recess opening laterally adj acent to theengaged position of the lug and wing, with a spring-pressed ball in saidrecess normally projected therefrom and adapted to engage thecomplementary coupler member, substantially as described.

2. In a hose coupling of the class described, a coupler member with itslocking surface, lug and wing, having a recess which opens through itslocking surface, in combination with a spring-pressed ball arranged insaid described.

and a springlprovided in the recess and bearing upon t e second ball,substantially as 4. Ina hose couplin of the class described, a couplermember wit its locking lug u on one side, and locking wing upon the ote1, said locking wing having at its .inner upper corner'a latch recess,and the body of said member having a latch recess closed at the top, andat the bottom opening through the locking surface adjacent to saidlocking lug,

the lower part of said recess being angular, the ball 10, provided insaid recess and a spring also in the recess, substantially as described.

.In testimony whereof I have hereunder signed my name in the presence ofthe two. subscribed witnesses.

- CARY WILLIAM MARTIN.

- Witneasesz- PAUL CARPENTER, EDWARD C. BURNS.

